18422721

素因数分解:

$3^4\times {\mathrm{79}}^1\times {\mathrm{2879}}^1$

素因数の和:2970

約数の個数: 20

約数和(自身を含む): 27878400

約数和(自身を除く): 9455679

約数列:

[1, 3, 9, 27, 79, 81, 237, 711, 2133, 2879, 6399, 8637, 25911, 77733, 227441, 233199, 682323, 2046969, 6140907, 18422721]

約数ペア:

[(1, 18422721), (3, 6140907), (9, 2046969), (27, 682323), (79, 233199), (81, 227441), (237, 77733), (711, 25911), (2133, 8637), (2879, 6399)]